Stan The Man wrote:

Also, it is not clear to me if one is meant to attach
tap - pressure reducer - water timer
or
tap - water timer - pressure reducer?

My instruction leaflet is clear. It says:

3. INSTALLING THE SYSTEM:
3.1 Connect to the tap using one of the
methods below:
a). Screw the Pressure Regulator (2760)
directly onto the outside tap.
b). Screw the Pressure Regulator (2760)
onto a water computer already fitted
to the outside tap.

So, when using a timer, connect the timer directly to the tap and the
pressure regulator to the timer.

OK, thanks, I'm trying that.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland